Attacking team (help)

Hello all!
I’ve come to a point, where I want to work setting up some attacking teams. In the past i’ve had mixed experiences running with mono teams, but as things progress, I would like to step into the 3-2 strategy. I don’t feel as if my heroes are supporting too much of an attacking strategy in general, but I might be wrong on this.

I was thinking of some sort of combination with Kushanku + Leonidas (costume) + Grim (costume) + Tinsel + Ariel

Any slot could be swapped. Maybe even for a Sonya for dispelling. However this was an example. As i’m new to this attacking strategy, I seek advice to form a team with my current roster (no matter what color combination).

I have plenty of 4* mats for all colors and can ascend 1 of every color of 5* currently, and i’m willing to level whatever hero may fit into a team.

I have mats to LB1 to up to 2x yellow 5* heroes and 2x red 5* heroes or LB1 any 4* hero.

On top of that, I have a FS 100/100, which can also be used for this. Probably will pick Frida or Frigg, if I don’t use it on a pull for an attacking team.

Also! I’m willing to feed away heroes, so that I can pull one from SE. I should be able to pull anything and I would be willing to do so.

My current roster (no 3* shown, as I dont think they will be relevant, as i’m sitting in between Platinum and Diamond).

I hope you guys can help me make up a team or more teams, that I could start working on. Any other advice is also very welcome! Even if it has nothing to do with the attacking team. Maybe other good ideas for the FS or SE, that could fit my team.